Another Crafting Rework (Fewer crafting feats, cost, time, and value determined separately by what is being crafted, what is used to craft it, and what magic is put on it. Each factor has each modifier.)

Big eater (Con and STR bonus for eating a larger amount, favorite foods required to attain bonuses, Dex penalty for eating less than twice as normal.)

This is a list of Progress levels from the d20 future rulebook. I will be labeling things that can be incorporated into the 3.5e system by progress level.

Pl0: Stone Age: No metal tools, no one is literate, likely more divine magic than arcane, arcane casters are mainly sorcerers, deity-centric religion is rare, and Barbarians, Druids, Sorcerers, and "primitive" classes and neanderthals are abundant, and "civilized" and "skilled" classes may not even exist. There is probably no currency, and likely to be a goods-for-goods bartering system.

Pl1: Bronze Age: Metal tools are now available, literacy is available but rare, somewhat more arcane magic, wizards may still be scarce, psionics may be emerging, there is a rise in deity-centric religions, and nature worship is in the decline. Standard currency is available, but may not be used by everyone. Fighters, rogues, wizards and "civilized" classes are emerging, "primitive" classes are still common while neanderthals may be dieing out.

Pl2: Middle Ages: Standard 3.5 conditions. The secret to working adamantine has been discovered and as a result, deep crystal can now be cut without psionic methods, literacy is prevalent, Arcane and divine magic is common, skilled and melee classes are abundant, copper to platinum metal coins are the norm, and good-for-good bartering systems have completely died out. Primitive classes are just as common as civilized classes. Neanderthals have either gained a permanent foothold, or are extinct.

Pl3: Age of Reason: Guns are becoming available as weapons, practically everyone is literate, there is an escalating rise in arcane magic and psionics, as institutions are readily available to teach many would-be wizards and psions all at once. Gold-standard paper currency is on the rise, metal coins are in decline, silver and copper are still used regularly. There is a sharp decline in barbarians and other "primitive" classes.

Pl4: Industrial Age: Steam punk; arcane magic and psionics are in the decline, and divine magic may be in a slight decline, while "skilled" classes are on the rise, as technology brings greater and greater benefits, without the need for years of study. Paper currency is becoming ambiguously valuable while the purity of standard metal coins is dropping and the gold standard is in decline. "Primitive" classes are becoming more and more scarce as land is used to build bigger and bigger cities.

Bartering, metal coins, metal standard bills, ambiguously valued bills, and digitally transferred ambiguously valued currency. Money gets less and less tangible as time goes on. The reason for this is very simple: it is good to have a single commodity, such as gold (or salt), as a standard bartering item to easily index the value of other commodities, that is reducible enough to accommodate the cheapest item that can be reasonable sold on the market. Such as a series of precious metals, which are each less expensive than the last, or a commodity standard paper currency which can represent anywhere from 100 to 100th of one of these coins. When Ambiguous currency is in circulation, it is nothing more than the formalization of debt. Digital Currency is a formalization of debt that comes around when communication stretches the globe (or plane), and it becomes impractical to transport real currency.

Depending on the exact nature of your game, it may be more practical to use either the wealth check system (d20 modern standard) or the currency system (the 3.5e standard). If your characters live on the road,renting hotels and sleeping under the stars, the currency standard is best. However, if they live in an urban environment where they rent an apartment, pay taxes, and have a set price of living, the best option is usually a wealth check to avoid worrying about all the tedious price of living expenses.